The story of "love, magic, and battles" revolves around Akuto Sai, a boy who aims to become part of his country's highest order of magicians and contribute to society. On the day he is admitted into the Constant Magical Academy, his aptitude test predicts the following: "Future Occupation... Devil King." Thus begins his difficult school life in which he is resented by his studious female class head, desired by a girl with mysterious powers, and guarded by a beautiful female android.